Stay-grinder.



U. MURTERA.

STAY GRINDER.

APPUCATION FILED SEPT. B. I914.

Patented Apr. 13, 1915.

4 SHEETS-SHEET 1.

1 1 mw\\ J 2/ U. MURTERA. STAY GRINDER.

APPLICATION man SEPT- 11. 19

1,135,71 1 Patented Apr. 13, 1915.

4 SHEETS-SHEET 2.

U. MURTERA.

STAY GRINDER.

APPLICATION nun SEPT. a, 19:4.

Patented Apr. 13, 1915.

4 SHEETS-B BEST 3.

GESFS U. MURTERA.

STAY GRINDER.

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UNITED STATES PATENT OFFICE.

UGO MURTERA, CHICAGO, ILLINOIS, ASSIGNOR TO KABO CORSET 00., OF CHICAGO, ILLINOIS, A CORPORATION OF WEST VIRGINIA.

STAY- GRINDER.

Specification of Letters Patent.

Patented Apr. 13, 19155 known as the continuous feed; that is a machine in which the work in the form of a strip travels through the machine with a continuous movement in one direction only.

One of the objects of the present invention is to provide a machine of the character specified which is simple and compact in structure.

A further object of the invention is to provide two sets of feeding means, one operating to produce a, fast feed and the other operating to produce a sloiv feed, and to provide means whereby the slow feed is brought into action while the grinders are performing their work, and the fast feed into action when the rinders are out of grinding engagement with the work, and to arrange the parts so that feeding action upon the work is only exerted by one set of feedin means at a time.

A furt 1er object of the invention is to provide means for placin the grinders, or at least one of them, out o grinding engagement with the work at periodical intervals and holding it out of such engagement for a predetermined period of time.

A further object of the invention is to move the grinders crosswise of the work and in opposite directions whereby an even wearing of the grinding surfaces is effected.

A further object of the invention is to provide means for resurfacing the grinding member at such times as may be required.

A further object of the invention lies in centralizing the means which control the liftin of the grinders, the feeding means for t e work, and the movement of the grinders across the work whereby these movements are easily timed to occur in proper relative relation to one another.

The invention further consists in the features of construction and combinations of parts hereinafter described and claimed.

In the drawings: Figure 1 is a plan View of a machine embodying the mechanism of the present invention; Fig. 2 is a side elevatIOII Of such machine; Fig. 3 is a side view looking u n the opposite side from that shown lIl ig. 2; Fig. 4 is a section on line 4-4 of Fig. 1 looklng in the direction of the arrow; Figs. 5 and 6 are side and face views respectively of the member which controls the actuation upon the work of the slow acting feeding means and the lacing of the grinding means into and out o grindmg position, together with the movement of the grinders crosswise of the work; Fig. 7 is a detail showing the rocking member which carries the grinders crosswise of the work; and Fig. 8 is a side view of the parts shown in Fig. 7.

In machines of the character specified, that is stay grinders in which the work is fed continuousl through the machines in one direction on y, the grinding of the sta s is effected by bringing the grinders perio icall into engagement with the work allowing them to so remain for a redetermined period of time, then bringing them out of grinding engagement and holding them out of such engagement for a further predetermined length of time. When the work is completed the strip will, at periodical intervals, be thinned by the grinding operation, and when this strip is in turn out into stay lengths each ground surface will be at the tip of the stay, whereby the sta is'rendered more flexible at this point an there is roduced what is known as a feather tipped stay.

Referring now to the drawings, and particularly to Figs. 1, 2, and 3, the machine is shown as mounted upon a table 9 which may be of any shape and size and which in practice, would be supported by some suitable sort of. standard or base not shown. A main driving shaft 10 is provided upon which are secured pulleys 11 and 12. From one of these pulleys, for illustration the pulley 11, passes a belt 13 (see Fig. 3) which engages a pulley 14 on a. shaft 15, from the other of the pulleys 12 asses a belt 16 which engages a pulley 1 on a shaft 18. It will be observed that the belt 13 is crossed while the belt 16 is uncrossed, so that the shafts 15 and 18 are operated in reverse directions. These shafts are supported by a suitable standard 19 and secured to the shaft 15 is a pulley 20 driving a belt 21 passing over a pulley 22 (see Fig. 2) which pulley in turn is Jointed to a shaft 23, upon which is mounted a rotatable grinding mem ber 24. This grinding member may be termed the upper grinder. Connected to the shaft 18 is a pulle 25 which drives a belt 26 actuating a pu ley 27 (see Fig. 2), which is mounted on a shaft 28 to which shaft is joined a grinding member 29, which may be termed the lower grinder. Owing to the reverse direction of drives of the shafts 15 and 18 the shaft 23 and 28 will be obviously driven in reverse directions with the resultant reverse drive of the grinders 24 and 29.

As stated, this machine is of the type in which the work is continuously fed through in one direction, and in which the grinders are periodically brought into and out of grinding engagement with the work. In order to have the grinders properly perform their grinding action it is necessary that the work move relatively slow during the grindin operation, but in order. to make the machine of practical utility and speed, it is necessary to advance the work fast during the period of non-grinding and I will now describe means whereby I obtain this slow and fast feeding.

I employ two sets of feed rolls, one set having the rolls thereof designated by the numerals 30 and 31, which rolls are clearly shown in Figs. 1 and 3. These feed rolls, as will be observed, are of relatively small diameter, and hence when acting upon the work exert a relatively slow feeding movement. The rolls of the other set of feed rolls are desi nated by the numerals 32 and 33, and as wi l be seen by referring to Figs. 1 and 3, are relatively large in diameter whereby when acting upon the work they exert a relatively fast feed. The feed rolls 30 and 31 are brought into action during the grinding operation and the feed rolls 32 and 33 during the periods of non-grinding. The feed roll 30 is mounted on the shaft 34 and the feed roll 31 on a shaft 35. There is a pinion 36 on each of the shafts 34 and 35, which pinions 'mesh with one another, and meshing with the pinion 36 on the shaft 35, is a pinion 37 on the shaft 38, and on this shaft 38 is a pinion 39, meshing with a pinion 40 on a shaft 41, to which shaft is secured a gear 42, meshing with a gear 43 on the main drive shaft 10. This latter will be more clearly seen by referring to Fig. 2, thus the drive of the feed rolls 30 and 31 is from the pinion 43, to the gear 42, to the shaft 41, to the pinion 40, to the gear 39, to the shaft 38, to the pinion 37, and thence to the gears 36 and to the shafts 34 and 35.

The feed roll 32 is mounted on a shaft 44, and the feed roll 33 is mounted on a shaft 45, and secured to each of the shafts 44 and 45 is a gear 46 (see Fig. 1) meshing with one another and establishing a driving connection between said shafts. Secured to the shaft 45 is a pinion 47, which meshes with a pinion 48 (see Fig. 3), which pinion is mounted on an arm 49 turning about the shaft 45 as a center, and the position of the arm is controlled b an adjustable member 50 in the form 0 a threaded stem. The pinion 48 meshes with a pinion 51 (see Figs. 1 and 3), on the shaft 41, and this pmion is in turn driven by means of the gear 42 and the inion 43, the latter being on the drive shaft 10. Thus the drive for the feed rolls 32 and 33, is from the pinion 43, to the gear 42, to the shaft 41, to the pinion 51, to the pinion 48, to the pinion 47, to the shaft 45, and through the gears 46 tothe shaft 44. The pinion 48, mounted as it 1s, on the arm 49, is capable of adjustment so that if desired the gear 51 may be removed and a smaller or larger gear substituted in its place, and the pinion 48 adjusted to accommodate itself to the size of the ear 51. This is to change the speed of the eed rolls 32 and 33 if it should be desired.

As stated, thefeed rolls 30 and 31 exert a slower feeding action upon the work than do the feed rolls 32 and 33, but, of course, both sets of rolls cannot act at the same time. The feed rolls 32 and 33 are always maintained in engagement with the work, but the pressure exerted on the work by these rolls is not sufiicient to im art any feeding action thereto while the eed rolls 30 and 31 are in active engagement with the work; that is to say when the work is being fed by the feed rolls 30 and 31, the rolls 32 and 33 simply slide or slip over the surface of the work without imparting any feeding action thereto, but when the rolls 30 and 31 are out of feeding engagement with the work, then the rolls 32 and 33 will come into action and exert a feeding movement. The means for placin the feed rolls 30 and 31 in and out of action will now be described.

The feed roll 31 is, as shown, stationary, the shaft 34 of the feed roll 30 is slidable up and down within the journal box 52 and the journal box 52 formed in a standard 53, and this standard also serves as a mounting for the shafts 35 and 38. Secured between the feed rolls and at one side thereof is an abutment which, as shown, is in the form of a roller 54 which has no movement save a revolvin one, mounted upon the shaft 34 is a mem er 55, which member is more clearly shown in Figs. 2, 4, 5 and 6. This member has mounted about its periphery a series of rollers 56, there being four in the construction shown. Now as this member 55 revolves, each time a roller 56 is brought into engagement with a roller 54 it will result in said member 55 together with the shaft 34 to which it is joined, being raised slightly within the journal 52. Of course the degree of movement need not be great, only sufficient to establish a clearance between the roll 30 andthe surface of the work. Such upward movement is against the resistance of a sprin 57 so that when the roller 56 passes off from the roller 54 the spring acts to again return the shaft 34 and the feed roll 30 to their downward position and bring the feed roll 30 into engagement with. the work. During the period in which the roller 30 is out of enga ement with the work the fast feeding rol ers Y32 and 33 act, and thus at this time the work is drawn through the machine with a relatively fast movement due to the action of the rolls 32 and 33. The gears 36 have teeth of sufiicient length so that when the roll 30 is lifted the gear engagementbetween the rolls 30 and 31 is not broken. The lifting of the feed roll 30 must be coincident with the bringing of the grinders out of grinding engagement, and this is accomplished in the following manner: Before going into the details of this, however, I will state that the shaft 23, which carries the upper grinder 24, is mounted on an arm 58 swinging about the shaft 15 as a center, and the lower grinder 29 is mounted upon an arm 59 which swings about the shaft 18 as a center. Each of these arms is forked at the ends, as will be seen from Fig. 1, to enable the positioning of the belts 13 and 16. The arm59 and the lower grinder member 39 are intended to remain fixed, but can be adjusted by means of a threaded stem 60 so as to raise the lower grinder member 29 as it wears away. The upper grinder member 24, however, is periodically brought into and out of engagement with the work, and is left in engagement for a predetermined length of time, and out of engagement for a predetermined period of time. This movement of the grinder 24 is accomplished by the rollers 56 of the member 55'. As the member 55 rotates the rollers engage the under surface of an arm61 which is pivoted at 62. The free end of this arm passes through a loop, or strap 63 which has its lower end joined or affixed to the arm 58, and a threaded stem 64; is entered into the upper end of the loop or stra 63, as will be seen from Figs. 2 and 4, this stem lies directly above the free end of the arm 61.

The arm 61, as stated, is raised by the action of the rollers 56 and of course some slight further upward movement is imparted by the upward movement ofthe member 55. due to the action of the roller 54 on the rollers 56, although this latter movement is unconsequential. As the arm 61 is raised the free end thereof engages the screw 64 with the result that the strap 63 is raised with the resultant raising of the arm 58 and lifting of the upper grinder member 011" from the work,which, of course, stops the rinding operation. The lifting of the fee roll 30 and the lifting of the arm 58 are coincident, so that as the grinders release from the work and stop the grinding operation, the high speed feed rolls take hold of the work with the result that very little time is lost in advancing the work through the machine from one point of grinding to another. This is highly important, since if it were not for this fast movement .stays could not be ground in suflicient quantities to make the machine a success from a commercial standpoint. It will be noted that although the grinder is raised by positive means it returns to grinding position solely by the action of avity.

As heretofore stated, one of the ob ects of the present invention is to move the grinders crosswise of the work during the grinding operation. The object being to revent the cutting of a groove in the perip cry of the grinder which would occur were the grinders to remain always in the same plane during the rinding operation. This cross movement 0% the grinder is accomplished by the following means: Both the shaft 23 and the shaft 28 which carry the upper and lower grinders respectively, are mounted within a member 65 (see Figs. 2, 7 and 8.) This member is pivoted to rock about a pin 66 mounted in cars 67 projecting from a casing 68. The pin, as will be seen from Fig. 2, lies centrally or up roximately so, of the distance between the shafts 23 and 28. Extending from the upper portion of the member 65 is an arm 68 upon the end of which is mounted a roller 69 and this roller is in engagement with an undulating surface 70 formed on one side of the member 55. It is obvious that as this member revolves the roller 69 following the undulations of the surface 70 will move in and out with the result that the niember 65 is rocked back and forth about the pin 66. This will cause the grinder 24 and 29 to move trans: verse] or crosswise of the work in opposite direction so that all portions of the periphery of the grinder are worn down even. It may be, however, that from time to time it will be necessary to reshape the periphery of the grinders, and to enable this to be accomplished I employ members 71 (see Fig. 3) which are provided with hard metal ends 72. These 'members are provided with threaded ends 73 and by manipulating a head 74 on said threaded end the members 71 can be advanced and retracted within the casing 68. Therefore, when it is desired to resurface the grinders these members 71 are advanced until the ends 72 engage the periphery of the grinders and are left in such engagement until the grinders are resurfaced. The function of the casing 68 is to keep the water used during the grinding operation from splashing out into the room. The water is conducted through a pipe ,7 5 and emerges from a nozzle 76. The water dischar as from the casing through a discharge pipe 77. Although the device has been described with considerable particularity nevertheless it is obvious that changes in construction may be made, and it is not the intention to limit the invention other than may be by the terms of the appended claims.

As will be seen from Figs. 7 and 8, the extremities of the member is forked, as at 78. These forked ends carry pins 79 engaging with grooves 80, in a block 81, which carries the shafts 23 or 28 depending whether the upper or lower grinder is being described. The function 0 this construction is to enable the shafts 23-and 28 to he slid longitudinally by the rocking movement of the member 65 without imparting any n and down movement to the shafts whic obviously would effect the proper operation of the machine.

I claim:

1. In a machine of the class described, the combination of grinding means, means for bringing the grinding means into and out of grinding engagement with the work for predetermined periods, members producing a slow feed of the work, members for producinga. fast feed of the work, means for bringing the slow feed members into action during the grindin operation, and means for bringing the ast feed members into action during the periods of non-grinding, substantially as described.

, 2. In a machine of the class described, the combination of rinding means, means for bringin the grinding means into and out of grin ing engagement with the work for predetermined periods, a set of feed rolls of relatively small diameter, a set of feed rolls of relatively large diameter, and means operatively connected whereby the small feed rolls operate upon the work durin the periods of grinding and the large fee rolls operate upon the work during the periods of non-grinding, substantially as described.

3; In a machine of the class described, the combination of grinding means, means operatively connected for moving the grinding means into and out of grinding engagement with the work for predetermined periods, means for producing a fast feed of the work, means for producing a slow feed of the work, said fast feeding means being in continuous engagement with the work but arranged to exert no feeding when the slow,

feeding means are acting and means 0 eratively connected whereby the slow fee ing means is brought into action during the riods of grinding and out of action durmg the periods of non-grinding, substantially as described.

4. In a machine of the class described, the combination of grindin means, feed rolls for producing a slow eed, feed rolls for producin a fast feed, means operatively connecte for simultaneously rendering inactive said grinding means and slow feed rolls and keeping them inactive for a predetermined length. of time, whereby the work during such eriod of inaction is fed by the fast fee rolls, substantially as described.

5. In a machine of the class described,

'the combination of upper and lower grinder members, a set of feed rolls for producing a slow feed, a set of feed rolls for producing a fast feed, means operatively connected for simultaneously moving said grinder members and slow acting feed rolls out of active engagement with the work and maintaining them inactive for a predetermined len th of time whereby the work is fed forwar during the such eriod of inaction by the operation of the ast feed rolls, substantially as described.

6. In a machine of the class described, the combination of upper and lower grinder members, upper and lower feed rolls arranged to impart a slow feeding movement to the work, upper and lower feed rolls arranged to impart a fast feeding movement to the work, and means operatively connected for simultaneously raising the upper grinder member and the; upper slow feed rolls renderin them inactive and for maintaining them in raised position for a predetermined length of time whereby the work during such periods of inaction is fed by the fast feed rolls, substantially as described.

7. In a machine of the class described, the combination of grinding members, feeding means for imparting a slow feed to the work, feed means for imparting a fast feed to the work, and a. single member for rendering the grindin means and slow feed means inactive an maintaining them inactive during a predetermined period of time whereby during such period of inaction the work is fed through the machine b the fast acting feeding means, substantia y as described.

8. In a machine of the class described, the combination of upper and lower grinding members, upper and lower feed rolls arranged to impart a slow feeding movement to the work, upper and lower feed rolls arranged to impart a fast feed to the work, and a single member for simultaneousl lifting the rup er grinder member and the upper of the s ow feed rolls to render them inactive and maintaining them inraised position for a predetermined period of time whereby the work is carried through the machine by the fast feed rolls during such period of inaction, substantially as de scribed.

9. In a machine of the class described, the combination of grinding means, feed means for imparting a slow feed to the work, feed means for imparting a fast feed to the work, and a single member of cam formation for rendering said grinding means and slow feed means inactive and maintaining them inactive for a predetermined length of time whereby the work is fed through the machine by the fast feed means during such period of inaction, substantially as described.

10. In a machine of the class described, the combination of grinding means including a grinding member carried by a swinging arm, a first set of feed rolls including slidable feed rolls, a second set 0 :5 rolls, said first set of feed rolls a different speed of feed to the wor the seoondset, and means for simultaneously swinging said arm and sliding said feed roll of the first set of rolls whereby the means and first set of feed rolls are rende inactive and maintain inactivefor a prede termined period of time whereby the'work is fed through the machine by the second set of feed rolls during such period of inaction.

11. In a machine of the class described, the combination of grinding means including a swinging grinding member, feed rolls for imparting a slow feedto the work, feed rolls for imparting a fast feed to the work, a member rotated in unison with one of the slow feed rolls and connected to said roll, a series of contacts on the periphery of said member, a contact fixed with respect to the feed rolls adapted to engage said peripheral contacts and shift the said member and feed roll and an operative connection between said member and swinging grinding means whereby when said member is shifte the grinding means is brought out of grinding position rendering the slow feed rolls and grinding means inactive and maintaining them inactive for a predetermined length of time whereby the work is fed through the machine by the action of the fast feed rolls, substantially as described.

12. In a machine of the class described, the combination of rotatable grinding means, means operatively connected for bringing said grinding means in and out of grinding engagement with the work for periodical intervals, and means for moving the grinding members crosswise of the work, substantially as described.

13. In a machine of the class described, the combination of rotatable grinding members, means for rotating the same, means operatively connected for bringing said grinding members in and out of grinding engagement with the work for periodical intervals, a swinging member connected to the grinder members and means for r0ck ing said swinging member to move the for peflodical interv grinding members crosswise of the work, substantially as described.

14. In a machine of the class described, the combination of grinding means, means for bringing the grinding means in and out of grinding engagement with the work for periodical mtervals, members for imparting a slow feed to the work, members for imparting a fast feed to the work, means for bringing the slow feed members into operative engagement with the work during the grin operation, means for bringing the fast feed members into operative engagement with the work during the periods ofn'on-grinding, and means for moving the grinders crosswise of the work, substantially a's 15.- In a machine of the class described, the combination-bf grinding means, means for b thegrinding means into and out of grin in'g enga ement with the work $15, a set of feed rolls of relatively small diameter, a set of feed rolls of relatively large diameter, means 0peratively connected whereby the small feed rolls act upon the-work during the periods of grinding and the large feed rolls acts upon the work durin' the periods of non grinding, and-means r moving the inders crosswise of the work, substantia 1y as described. I

16. In a machine of the class described, the combination of grinding means, feed means for imparting a fast feed to the work, feed means for imparting a slow feed to the work, means operatively connected for simultaneously rendering said grinding means and slow feed means inactive and maintain them inactive for a predetermined period of time whereby during such period of inaction the work is carried through the machine by the fast feed means, and means for moving the grinders crosswise of the work, substantially as described.

17. In a machine of the class described, the combination of upper and lower grinder members, upper and lower feed rolls arranged to impart a slow feed to the work, upper and lower feed rolls arranged to impart a fast feed to the work, and a single member for simultaneously lifting the upper grinder member and the upper of the slow feed rolls to render them inactive and maintaining them in inactive position for a predetermined period of time whereby the work is carried through the machine by the fast feed rolls during such period of inaction, and means for moving the grinders crosswise of the work, substantially as described.

18. In a machine of the class described, the combination of grinding means. means for imparting a slow feed to the work, and means for imparting a fast feed to the work, m ans for rendering the grinding means and slow feed means inactive and maintaining them inactive for a predetermined length of time whereby the work is fed through the machine by the action of the fast feed means, means for moving the grinders crosswise of the work and a single member for controlling the actions of the inding means, the actions of the slow fee ing means, and the movement of the grinder members crosswise of the work, substantially as described.

19. In a machine of the class described, the combination of grindin means, means for imparting a slow fee to the work, means for imparting a fast fed to the work, a rotatable member arranged with contacts around its periphery and formed with an undulating surface, a fixed contact with which said peripheral contacts enga a connection between said member an the slow feed means, a connection between said member and the grinding means, the engagement of each peripheral contact with the fixed contact rendering said slow feed means and inding means inactive whereby work is ed through the machine durin the period of inaction by the fast f means, a member traveling upon said undulating surface and a connection between said member and grinding means whereby the grinding means are moved crosswise of copies of the work by the action of said member, substantially as described.

20. In a machine of the class described, the combination of upper and lower grinding members, a shaft for each grinding member, means for rotating said shaft, a mounting for each of said shafts, a rocking frame, a connection between said rocking frame and each of said shafts, a memher for moving said shafts and shaft mountings in a direction longitudinal of said shafts, means for moving said member whereby the grinding members are moved cromwise of the work, and means for feedingthe work, substantially as described.

'21. In a machine of the class described, the combination of grinding members, meals for feeding the work, a rocking frame having its center of movement medially between the grinding members, a connection between said rocking frame and grinding and means or rocking said frame to move the grinding members crosswise of the work and in opposite directions, substan ially s descr d,-

UGO MURTERA.

Witnesses:

A. V, BRQWN, J, G. MURRAY.

this patent may be obtained for five cents each, by the flommissioner of ratents,

Washington, 11.0.

Aflidavit having been filed showing that the name of the patentee in Letters Patent No. 1,135,711, granted April 13, 1915, for an improvement in Stay-Grinders,

should have been written and printed Hugo Murtem instead of Ugo Murtera, it

is hereby certified that the proper correction has been made in the files and records pertaining to the case in the Patent Ofiice, and should be read in the said Letters Patent that the same may conform thereto.

Signed and sealed this 25th day of May, A. D., 1915.

[SEAL] R. F. WHITEHEAD,

Acting Commissioner of Patents. 

